Ignoring things that were designed as computers, but were small,

Casio FX-702P & a similar one
Sharp PC-1210
Something by casio with character recognition
These were all pretty similar, basic programming and not much more than calculator

Psion organiser II
This was getting better - good programming, but an alphabetical order keyboard! Also quite heavy
Psion organiser 3 & 3A
Like a proper computer. Programmable, decent battery life, could connect to a modem etc. 3a as the three but improved.
Newton OMP (not called OMP until later). Fantastic toy, not actually that much use
Newton 120 - getting much better
Newton 130 - proper handwriting recognition, decent battery life, fantastic operating system
Newton 2100 - The pinnicale of handheld computing. Damn that steve jobs!
Compaq iPaq 3600 - work gave it to me to write some software with. It worked and was the first thing I had a GPS on.
Compaq iPaq 3800 - Same but more memory
[COLOR="Purple"]Zodiac Tapwave - Great little palm, could have been so much more if the company hadn't gone out of business, and the sony PSP hadn't come out at the wrong time
Sony PSP. Not much to say - it is a PSP.
iPod Touch Well, I also had several previous iPods (back to the week the second generation came out), but didn't really count them as much as portable computing devices.
TomTom Go, TomTom 510 - great GPS devices.
Nokia 770
Nokia 810

Atari Portfolio

Those are the little things, then there are the bigger things:

Apple Powerbook 160, 190, 5300, G4 titanium 400, titanium 800, 12" 867
Macbook, Macbook Pro 2.3GHz
Sharp old win95 laptop, Fujitsu 700 laptop
Viewsonic v1100 tablet PC
Fujitsu Stylistic 3400
Fujitsu stylistic ST4110P
HP TC1000
HP TC1100


I think I still have most of these. Apart from the little machines that are all gone, and the older psions, I have the 3 (not the 3a), the tapwave,psp,both nokias, the touch (and two other ipods),the iPaq 3800, the newtons, all the powerbooks apart from the titaniums, the macbook (wife has), the macbook pro (typing on), the ST4110P & TC1100.

I should make a group photo of all this one day!